| Room-temperature hydrogen sensing properties of SnO2 -coated multi-walled carbon nanotubes | |
| Sun Xue2; Fang Hai-tao1; Yu Hui-long1; Chu Yi1; Zhang Bao-you1; Du Jin-hong3; Wang Da-wei3; Li Feng3; Wang Fu-ping2 | |
| Corresponding Author | Fang Hai-tao(htfang@hit.edu.cn) |
| 2010-06-01 | |
| Source Publication | NEW CARBON MATERIALS
 |
| ISSN | 1007-8827 |
| Volume | 25Issue:3Pages:218-224 |
| Abstract | A SnCl2 solution was used to prepare SnO2-coated multi-walled carbon nanotubes (SnO2/MWCNTs), and their hydrogen sensing properties at room temperature was studied. SEM and TEM observations indicate that SnO2 nanoparticles with a size of 5 nm are uniformly coated on the MWCNTs, forming a continuous SnO2 coating. The SnO2/MWCNTs are sensitive to 10(-4) hydrogen at room temperature. During the sensing measurement at room temperature for 10(-3) hydrogen mixed with argon gas, the current change with gas concentration is reversed after the mixed gas is switched to air. This can be ascribed to the reaction between O-2 in air and residual H-2 around the SnO2/MWCNTs to form adsorbed H2O and the subsequent desorption of H2O by substitution adsorption of O-2 in air. The H2O adsorption may lead to a decrease of the electric resistance of SnO2/MWCNTs and thus an increase of current measured. The reversal of current implies that the SnO2/MWCNTs may possess a good sensitivity to humidity at room temperature. |
| Keyword | SnO2 Coat Multi-wall carbon nanotubes Hydrogen sensing properties |
| Funding Organization | National Science Foundation of China ; Science Foundation of Heilongjiang Province |
| Indexed By | SCI |
| Language | 英语 |
| Funding Project | National Science Foundation of China[50472084] ; National Science Foundation of China[50602011] ; Science Foundation of Heilongjiang Province[E200517] |
| WOS Research Area | Materials Science |
| WOS Subject | Materials Science, Multidisciplinary |
| WOS ID | WOS:000279421300010 |
| Publisher | SCIENCE PRESS |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://ir.imr.ac.cn/handle/321006/99773 |
| Collection | 中国科学院金属研究所 |
| Corresponding Author | Fang Hai-tao |
| Affiliation | 1.Harbin Inst Technol, Sch Mat Sci & Engn, Harbin 150001, Peoples R China 2.Harbin Inst Technol, Sch Sci, Harbin 150001, Peoples R China 3.Chinese Acad Sci, Inst Met Res, Shenyang Natl Lab Mat Sci, Shenyang 110016, Peoples R China |
| Recommended Citation GB/T 7714 | Sun Xue,Fang Hai-tao,Yu Hui-long,et al. Room-temperature hydrogen sensing properties of SnO2 -coated multi-walled carbon nanotubes[J]. NEW CARBON MATERIALS,2010,25(3):218-224. |
| APA | Sun Xue.,Fang Hai-tao.,Yu Hui-long.,Chu Yi.,Zhang Bao-you.,...&Wang Fu-ping.(2010).Room-temperature hydrogen sensing properties of SnO2 -coated multi-walled carbon nanotubes.NEW CARBON MATERIALS,25(3),218-224. |
| MLA | Sun Xue,et al."Room-temperature hydrogen sensing properties of SnO2 -coated multi-walled carbon nanotubes".NEW CARBON MATERIALS 25.3(2010):218-224. |
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